10 Best under sink water filtration system in Canada

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Last Updated - 2025/10/11

Best Choice

01
iSpring

iSpring RCC7AK, NSF Certified, 75 GPD, Alkaline 6-Stage Reverse Osmosis System, pH+ Remineralization RO Water Filter System Under Sink, Patented Top-Mounted Faucet Design for Easy Installation

18% Off

9.7 Taste

9.5 worth the money

9.3 Easy installation
Main highlights

TRUSTWORTHY SUPPORT – America’s favorite RO brand, backed by lifetime technical support in Atlanta, GA, ensuring expert assistance whenever you need it.
SEE WHAT’S CAUGHT – The transparent first-stage filter housing makes it easy to monitor contaminant buildup, ensuring timely filter changes.
PATENTED DESIGN – The top-mounted fastener allows for easy countertop installation entirely from above, eliminating the hassle of tightening the nut from underneath the sink.
NSF 58 CERTIFIED RO SYSTEM – Unlike other brands that lack NSF certification or full system certification, our RCC7AK is certified to NSF/ANSI 58 and 372 standards for the entire water filtration system.
MINERAL BOOST – The patent-pending natural mineral AK stage delivers spring water with a balanced, healthy pH and multiple essential minerals.
EFFECTIVE FILTRATION – Reduces TDS (93-98%), PFAS (96-99%), Chlorine (95-99%), Asbestos (>99.7%), Barium (>98.4%), Cadmium (>98.8%), Chromium (>99.2%), Copper (>97.8%), Fluoride (>97.4%), Lead (>98.9%), Selenium (>99.0%), and over 1,000 other contaminants.
EASY INSTALLATION – The RO water system features a DIY-friendly design with quick-fitting connections, a clear manual, and step-by-step videos for a hassle-free setup.
CONVENIENT REPLACEMENT FILTERS - Easy access to replacement filter sets: F4AK (6-Month), F9K (1-Year), F19K75 (2-Year), and F28K75 (3-Year).
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9.9

Exceptional

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02
Express Water

Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Filters – 50 GPD, 14 x 15 x 5, White

13% Off Free Shipping

9.7 worth the money

9.5 Easy installation

9.5 Taste
Main highlights

Water Purification System: Drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you'll ever drink
Under Sink Water Filter: Don't waste money on professional installation. Express Water's quick and easy-to-understand design means you can install and understand everything about your new water filtration system
Under Sink Water Filter System: No need to mess with refilling or activating your water filter, Express Water's water filtration systems automatically fill your water tank with high quality drinking water
Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more.
On Demand Support: Support from experts who can answer any of your questions about your new water filter
Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture
Help Has Arrived - Support from experts who can answer any of your questions about your home's water
Customizable RO Water Filter System: Express Water home water filtration systems are fully upgradable and customizable with quick connecting fittings. Try additional filtration attachments including UV Water Filter, Alkaline Water Filter, Deionization Water Filter, and more
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9.7

Exceptional

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Value for Money

03
Waterdrop

Waterdrop 15UA Under Sink Water Filter System, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet, NSF/ANSI 42 Certified, 16000 Gallons, USA Tech

36% Off Free Shipping

9.9 Easy installation

9.3 Taste

9.3 worth the money
Main highlights

Ultra-long service life: When used with municipal water, each filter has a maximum service life of 24 months or 16,000 gallons.[1]
Innovative multistage filtration: The Waterdrop Direct Connect Undersink Water Filtration System uses innovative multistage filtration. And it can effectively reduces chlorine, heavy metals, chemical iṁpurity, sediment and other large particles.[2] Enjoy healthy and pure water straight from your tap no need to buy bottled water anymore!
IAPMO certified filter: Made from premium BPA-free and lead-free materials, the under sink water filter is certified by IAPMO against NSF/ANSI 372 Standard, ensuring reliable use from inside to outside. Certified by IAPMO against NSF/ANSI 42 Standard, the water filter can effectively reduce chlorine, taste and odor. Tested by third party laboratory against NSF/ANSI 53 standard it can reduce lead. To look over the 42&372 certification, please search "WD-15UA" on IAPMO official website.
Fast flow rate & multiple uses: The fast and stable water supply provides pure and fresh water that tastes like spring water. The tested full flow rate is 0.75 gpm at 60 psi. Developed for household and commercial use, the Undersink Water Filtration System can be installed in your kitchen, bathroom, RV, or office to meet your daily water needs. Ideal for drinking, cooking, skincare, and cleaning.
Easy installation: The under sink water filter system should be connected only to a cold water supply. With innovative push-to-connect fittings, the entire installation process takes less than 3 minutes. The system includes a 3/8 inchhose with a direct connection that adapts to standard 3/8 inch feed water valves under US sinks. The 3/8 inch 1/2 inch convertor fitting helps you connect the system to both 1/2 inch and 3/8 inch cold water lines and faucets.
Compatibility: Our system perfectly fits the feed water adapter no matter with 3/8" or 1/2" connector. If a female threaded connector is needed to connect to your faucet, please send us a message. Our professional technical team will provide you with customized and systematic solutions.
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9.5

Excellent

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04
Waterdrop

Waterdrop 15UB Under Sink Water Filter System, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter with Dedicated Brushed Nickel Faucet, NSF/ANSI 42 Certified, 16K Gallons, USA Tech

30% Off Free Shipping

9.9 Taste

9.9 worth the money

9.7 Easy installation
Main highlights

WQA Certified Filter: Made from premium BPA-free and lead-free materials, the under sink water filter is certified by WQA against NSF/ANSI 372 Standard, ensuring reliable use from inside to outside. Certified by WQA against NSF/ANSI 42 Standard, the water filter can effectively reduce chlorine, taste and odor. Tested by third party laboratory against NSF/ANSI 53 standard it can reduce lead. To look over the 42&372 certification, please search "WD-15UB" on WQA official website.
Ultra-long service life: When used with municipal water, each undersink water filter has a maximum service life of 24 months or 16,000 gallons.[1]
Premium Dedicated Faucet: The under sink water filter system comes with a lead-free brushed stainless steel faucet. For separate drinking faucet you already have, WD-15UC system ( Search ASIN: B085G9T9TB ) would be a better choice.
Innovative Multistage Filtration: The Waterdrop Under Sink Water Filtration System uses innovative multistage filtration. And it can effectively reduces chlorine, heavy metals, chemical iṁpurity, sediment and other large particles.[2] Use activated carbon block and other advanced filter media ensure efficient and safe filtration. Enjoy healthy and pure water straight from your tap – no need to buy bottled water anymore!
Easy Installation: This under sink water filter system should be connected only to a cold water supply. With innovative push-to-connect fittings, installation takes less than 3 minutes. The twist-and-lock design helps you replace the filter in 3 seconds without any tools. The under sink water filter system comes with a feed water adapter that can connect to the tubing. The 3/8"–1/2" convertor fitting can connect this system to 1/2" or 3/8" cold water lines and faucets.
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9.4

Excellent

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05
Waterdrop

Waterdrop TSA 8 Layer Under Sink Water Filter System, Under Sink Water Filtration System, Reduces PFAS, PFOA/PFOS, Fluoride, Chlorine, Bad Taste & Odor, NSF/ANSI 42 Certified Element, USA Tech

Free Shipping
Main highlights

𝟑𝐦𝐢𝐧 𝐢𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧, 𝟑𝐬 𝐫𝐞𝐩𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭: This under sink water filter system works perfectly with 3/8” and 1/2” cold water tubes. The under sink water filtration system is a simple DIY. With innovative push-to-connect fittings, the installation of the under sink water filter system takes less than 3 minutes. In addition, the twist-and-lock design lets you replace each filter in just 3 seconds.
𝐍𝐨 𝐥𝐞𝐚𝐤𝐢𝐧𝐠 𝐨𝐫 𝐜𝐫𝐚𝐜𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐡𝐢𝐠𝐡𝐥𝐲 𝐩𝐫𝐞𝐜𝐢𝐬𝐞𝐝 𝐭𝐞𝐜𝐡𝐧𝐢𝐪𝐮𝐞: The under sink water filter adopts strong materials with an upgraded design. In addition, the age-resistant and freeze-resistant materials make the system twice thicker. The under counter water filter system for kitchen has also passed 400 psi burst pressure, 100,000+ pulse tests at 150 psi, and static tests at 300 psi. These tests prove that the durable integral design clears up worries about cracking cases and leaking issue.
𝐌𝐨𝐫𝐞 𝐟𝐢𝐥𝐭𝐞𝐫𝐬, 𝐛𝐞𝐭𝐭𝐞𝐫 𝐭𝐚𝐬𝐭𝐞: This under sink water filter system comes with 3 filters and can realize 8-stage deep filtration to reduce PFAS, PFOA/PFOS, residual chlorine, fluorides, heavy metals, silt, rust, cyst, etc. Its KDF materials can effectively reduce heavy metals. Its resin reduces fluorides. The CT filter has passed WQA certification to reduce residual chlorine and improve taste, thereby ensuring every drop is pure and healthy.
𝐋𝐢𝐟𝐞𝐬𝐩𝐚𝐧 𝐨𝐟 𝐮𝐩 𝐭𝐨 𝟏𝟖 𝐦𝐨𝐧𝐭𝐡𝐬: The three under sink water filters have lifespans of 6 months, 8-12 months, and 12-18 months, respectively.
𝐆𝐨𝐨𝐝 𝐬𝐞𝐫𝐯𝐢𝐜𝐞：With a stale water flow, this under sink water filter provides all-round protection for drinking or usage. The carbon block is made from natural coconut shells. Please confirm whether you are allergic to it. 𝐍𝐨𝐭𝐞: This under sink water filtation system can retain minerals,but will NOT reduce 𝐓𝐨𝐭𝐚𝐥 𝐃𝐢𝐬𝐬𝐨𝐥𝐯𝐞𝐝 𝐒𝐨𝐥𝐢𝐝𝐬 (𝐓𝐃𝐒).
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9.3

Excellent

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06
ICEPURE

ICEPURE Under Sink Water Filter System, 3 Years or 22000 Gallons Ultra High Life NSF/ANSI 42 Certified, Removes Heavy Metals,Chlorine,Direct Connect Under Counter Drinking Water System, USA Tech

Free Shipping
Main highlights

Premium Materials - BPA-free and Food-grade materials. This filter is made from advanced coconut shell carbon and is Certified by Authoritative Organizations for Materials. The Outer layer is 0.5 Micron, ensuring better filtration. The carbon blocks have been independently tested for heavy metals, large sediments, and all other impurities. With such a high level of filtration, you can be confident that you are drinking clean and clear water.
Long Service Life - Tested by NSF/ANSI 42 for large filtration capacity of 22000 Gallons when used municipal water. 3x longer life than other filters, the cheaper most bang for the buck. Recommend replacing the filter every 22000 gallons for 3 Years for better filtration. ICEPURE filters use advanced and precise measurement technology, combined with 3D multi-dimensional design technology to ensure that fully match and do not leak water.
Fit 1/2" 3/8" Cold Water Line - Only for cold water line. Directly connect to the original faucet without a countertop hole. Suitable for faucets with 1/2" or 3/8" FEMALENPT thread. For a different connection type, please contact us BEFORE purchase. It can be quickly installed in your kitchen, bathroom, bar, RV, or office to meet daily water needs. Ideal for drinking, cooking, making coffee, pet water, houseplants, humidifiers, skincare, cleaning, etc.
Easy Installation - Easy to install with clear instructions and video. ICEPURE Under Sink Water Filter with super simple plug-and-play install design. It takes less than 3 minutes for the installation and a 2-second filter change. No professional is required. High flow rate, The tested full flow rate is 2.5GPM at 60PSI.
Authoritative Certifications - ICEPURE Under Sink Water Filter System bears major Authoritative Certifications on markets, such as NSF/ANSI 42 & 372. NSF/ANSI 42 tested reduces Chlorine, Taste, and Odor. 22000 Gallons filter capacity. Significantly improving the taste of drinking water to provide pure-tasting water, while retaining minerals beneficial to the human body. NSF/ANSI 372 Certification for Lead-Free.
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9.0

Excellent

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07
Waterdrop

Waterdrop 10UA Under Sink Water Filter System, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet, NSF/ANSI 42 Certified, 8K Gallons, USA Tech

33% Off Free Shipping

9.9 Easy installation

9.3 Taste
Main highlights

𝐖𝐐𝐀 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐅𝐢𝐥𝐭𝐞𝐫: Made from premium BPA-free and lead-free materials, the under sink water filter is certified by WQA against NSF/ANSI 372 Standard, ensuring reliable use from inside to outside. Certified by WQA against NSF/ANSI 42 Standard, the water filter can effectively reduce chlorine, taste and odor. Tested by third party laboratory against NSF/ANSI 53 standard it can reduce lead. To look over the 42&372 certification, please search "WD-10UA" on WQA official website.
𝐔𝐥𝐭𝐫𝐚-𝐋𝐨𝐧𝐠 𝐒𝐞𝐫𝐯𝐢𝐜𝐞 𝐋𝐢𝐟𝐞: When used with municipal water, each filter has a maximum service life of 12 months or 8,000 gallons.[1]
𝐈𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐯𝐞 𝐌𝐮𝐥𝐭𝐢𝐬𝐭𝐚𝐠𝐞 𝐅𝐢𝐥𝐭𝐫𝐚𝐭𝐢𝐨𝐧: The Waterdrop Direct Connect Under Sink Water Filter System uses innovative multistage filtration. And it can effectively reduces lead, chlorine, heavy metals, chemical iṁpurity, sediment and other large particles.[2] Enjoy healthy and pure water straight from your tap – no need to buy bottled water anymore!
𝐅𝐚𝐬𝐭 𝐅𝐥𝐨𝐰 𝐑𝐚𝐭𝐞 & 𝐌𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐔𝐬𝐞𝐬: The fast and stable water supply provides pure water that tastes like spring water. The tested full flow rate is 0.75 gpm at 60 psi. Developed for household and commercial use, the Under Sink Water Filter System can be installed in your kitchen, bathroom, RV, or office to meet your daily water needs. With its exquisite design and small size, it is the best choice for a rented apartment. Ideal for drinking, cooking, skincare, and cleaning.
𝐄𝐚𝐬𝐲 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧: The system should be connected only to a cold water supply. With innovative push-to-connect fittings, the installation process takes less than 3 minutes. The twist-and-lock design ensures you can replace the filter in 3 seconds. The system includes a 3/8" hose with a direct connection that adapts to standard 3/8" feed water valves under US sinks. The 3/8"–1/2" convertor fitting helps you connect the system to both 1/2" and 3/8" cold water lines and faucets.
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8.8

Very Good

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08
FRIZZLIFE

Frizzlife 3-Stage Under Sink Water Filter System SK99-NEW, Direct Connect, Certified 3-Stage 0.5 Micron Carbon Block, Remove 99.99% Lead, Chlorine, Chloramine, Fluoride, Odor & Bad Taste- Quick Change

Free Shipping

9.7 Easy installation

9.3 Taste

9.1 worth the money
Main highlights

【Superior Design with 24/7 USA Tech Support】The complete water filtration system of NEW SK99 has been upgraded, featured with stronger cases, bottom caps, integrated water board, etc. A pressure regulator is added, serving as double insurance. No more leakage or crack concerns! The compact design of the water filter for sink can fit your cabinet under the sink.
【Premium Filtration Performance (0.5 Micron)】Adopting 0.5 micron filtration accuracy, almost 10X higher than other brands, the compounded filter cartridges of SK99 under counter water filter consist of 8 layers of filtration materials. Certified to reduce Lead, Chlorine, Taste & Odor and Particulates. Leave in all the beneficial minerals.
【Money Saver & Green Choice】Frizzlife SK99 under sink water filter systems are designed with the concept of green, convenience and cost-effective. When replacing the filters, You don’t have to throw away the whole plastic housing but only the core filters inside. Choose Frizzlife to save more waste to the earth, and enjoy the great-tasting water in a more economic and green way! Search replacement filters: M3001, M3002,M3003, and the filter set M3005
【Fully Certificated System】Frizzlife SK99 under sink water filter system is rigorously tested and certified by IAMPO against NSF/ANSI 42&53 for Material Safety, Structure Integrity, Flow rate, and Filtration Effectiveness on eliminating but not restrict to chlorine, particle class, and lead. Note: Do not reduce TDS!
【Fast Water Flow & DIY Installation】The water filter for sink features with strong flow, it can fill up a cup of water in 3 secs. The installation takes less than 15 minutes, no plumber required. With TWIST-IN design, the replacement of the filters is super easy even for elders. The SK99 under sink filter system can simultaneously serve both of your sink and refrigerator by using ice maker kit IMC-2 (Asin#B07RBMLR26). The claim of capacity is verified through manufacture internal testing only.
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8.7

Very Good

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09
Waterdrop

Waterdrop TSU 0.01 Micron Ultra Filtration Under Sink Water Filter System, 3-Stage Tankless Under Sink Water Filtration System with Faucet, Smart Panel, Not Lower TDS, Drilling Required

Free Shipping

9.5 Easy installation

9.3 Taste

9.1 worth the money
Main highlights

Smart indicating system Smart indicating system that allows you to check water quality and working mode with a glance. The electronic indicators on the front panel will notify you when to replace the filters by changing the color, ensuring safe, clean, and healthy purified water all day long!
Integrated waterway The system adopts the cutting edge integrated waterway to prevent water leakage, which allows you to replace the filters without cutting off the water supply, deliver you a safe and secured water purification experience.
Easy Installation Waterdrop Ultra Filtration system is an innovative, all-in-one intelligent water purification system. The system comes with a stainless steel faucet, a 3/8 inch inlet hose, a 1/4 inch outlet hose, a 3/8 inch -1/2 inch feed water adapter, and other necessary accessories. In just a few minutes, Waterdrop Ultra Filtration system can be installed completely, and in just three seconds, the filter can be changed with one single twist-pull. Installation is that easy!
24 Months filter life The advanced ultrafiltration membrane design extended service life to 24 months, higher than most of the filter products on the market, which reduces the frequency of future filter replacement and saves future maintenance costs. The system delivers a more effective filtration than normal water filters, giving you pure and healthy drinking water all the time. In addition, the PP filter is 6 months and the CT filter is 12 months.
0.01m Ultra Filtration membrane This 0.01 micron Ultra Filtration membrane can reduce most of the harmful substances larger than 0.01micron. This system can effectively reduce chlorine, taste and odor; reduce fluoride, heavy metals and much more. Besides, this system is not designed for TDS removal, It will retain minerals such as potassium, calcium, sodium, and magnesium, which are beneficial for your health.
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8.5

Good

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10
Waterdrop

Waterdrop 17UB 3 Years Under Sink Water Filter System-Reduces Lead, Chlorine, Bad Taste&Odor-Under Counter Water Filter with Dedicated Brushed Nickel Faucet-NSF/ANSI 42 Certified-24K Gallons-USA Tech

13% Off Free Shipping
Main highlights

【Ultra-long service life】When used with municipal water, each undersink water filter has a maximum service life of 36 months or 24,000 gallons.[1]
Solve Clogging Problem: By upgrading the filtration area, our filter now provides a 20X increase in dirt adhesion area, enhancing filtration capability while minimizing the risk of clogging.
Premium dedicated faucet: The under sink water filtraion system comes with a lead-free brushed stainless steel faucet. For separate drinking faucet you already have, WD-15UC system ( Search ASIN: B085G9T9TB ) would be a better choice.
IAPMO Certified Safe Material: Made from premium BPA-free and lead-free materials, the under sink water filtration system is certified by IAPMO against NSF/ANSI 372 Standard, ensuring reliable use from the inside out. To look over the 42&372 certification, please search "WD-17UB" on IAPMO official website.
Fast Flow Rate & Multiple Uses: The tested full flow rate of this under sink water filter system is 0.75 gpm at 60 psi. The fast and stable water supply provides pure and fresh water that tastes like spring water. Developed for household and commercial use, Waterdrop Under Sink Water Filter System can be installed in your kitchen, RV, or office to meet your daily water needs. NOTE: At least 21.5" of vertical under sink space is required to install this filter!
Efficient Filtration: The Waterdrop Direct Connect Under Sink Water Filter System is tested by IAPMO against NSF/ANSI 42 for reduction of chlorine, taste&odor. Tested by KC authorative organization, it can effectively reduce VOC(chloroform), benzene, chlorobenzene, chloropicrin and styrene. It can effectively remove sediment, rust and other large particles. Tested by third party laboratory against NSF/ANSI 53 standard it can reduce lead.Besides, it can reduce PFAS, PFOA/PFOS.
Easy Installation: This under sink water filter system should be connected only to a cold water supply. With innovative push-to-connect fittings, installation takes less than 3 minutes. The twist-and-lock design helps you replace the filter in 3 seconds without any tools. The under sink water filter system comes with a feed water adapter that can connect to the tubing. The 3/8’’–1/2’’ convertor fitting can connect this system to 1/2’’ or 3/8’’ cold water lines and faucets.
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8.4

Good

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